Hi folks,

After scouring Google and the fora here, I've had to revert to asking for help. :)

I have a web app that uses Spring 2.0.6 and Hibernate 3.2.1 and MySQL 5.x that deploys without problems to Tomcat 5.5 under Windows. However, deploying the same app to Tomcat on Ubuntu 7.10, I get the following error:

java.lang.NoClassDefFoundError: net.sf.cglib.proxy.Enhancer
java.lang.Class.initializeClass(libgcj.so.81)
org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.getProxyFactory(CGLIBLazyInitializer.java:111)
org.hibernate.proxy.pojo.cglib.CGLIBProxyFactory.postInstantiate(CGLIBProxyFactory.java:43)
org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactory(PojoEntityTuplizer.java:162)
org.hibernate.tuple.entity.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:135)
org.hibernate.tuple.entity.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:55)
org.hibernate.tuple.entity.EntityEntityModeToTuplizerMapping.<init>(EntityEntityModeToTuplizerMapping.java:56)
org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:269)
org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:425)
org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:109)
org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:55)
org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:226)
org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1218)
com.mydyo.persistence.HibernateUtil.init(HibernateUtil.java:20)
com.mydyo.web.controller.FaveQuestDispatcherServlet.init(FaveQuestDispatcherServlet.java:46)
org.apache.jsp.jsp.index_jsp._jspService(index_jsp.java:45)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:328)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:315)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)


I have been assuming that CGLib or a dependency isn't visible in the CLASSPATH, but I've tried using the -nodep version of the jar, as well as pulling the individual Hibernate and CGLib jars out of WEB-INF/lib and moving them to common/lib under Tomcat - no joy. I also verified that Tomcat is using JDK 1.5. The security policies appear to be the same in both Windows and Linux.

I added a quick test servlet that verifies that I can talk to my Commons DBCP data source through straight JDBC - no issues there.

I'm at a loss and would appreciate any help.

Thanks in advance.

Dave Rooney

> java.lang.Class.initializeClass(libgcj.so.81)

Seems to be that your Tomcat picks up the GCJ-compiler (libgcj.so) and not the JDK. Please make sure that Tomcat uses java from the JDK (check PATH/JAVA_HOME/etc.pp.)

HTH, Maik

OK - that's a good start... my JAVA_HOME is currently pointing to /usr . running 'java -version' yields:

java version "1.5.0"
gij (GNU libgcj) version 4.2.1 (Ubuntu 4.2.1-5ubuntu5)

There are links in /usr/bin to the 'real' JDK 5 installation. I used apt-get to install the JDK - should I remove it and install it differently?

My experience with Debian/Ubuntu is limited - I've used FreeBSD before, and I'm not very familiar with the 'standard' installations locations. That ignorance may very well be part of the problem.

Thanks for the help!

Dave...

Found the problem... Tomcat was using a different JDK than I thought. The JDK list had it using GCJ rather than Sun's JDK, which was evident in the stack trace.

Thanks for the help - the hint got me looking in the right direction!

Dave...

Hi,

Where did you find this jdk list, which file was modified to do these changes ?

Reffering to your post: . Tomcat was using a different JDK than I thought. The JDK list had it using GCJ rather than Sun's JDK, which was evident in the stack trace.

THanks
Shobhana